"Aerodynamic downforce" refers to the force that pushes something down, like a car or an airplane, making it stay on the ground or maintain stability in the air by countering the lifting force caused by the flow of air around it. Full definition
However, while this level of aerodynamic downforce has improved speed, it's made it harder for drivers to pass one another. (automobilemag.com)
This large air guidance element spans the entire width of the roof, increasing aerodynamic downforce on the rear axle. (ausmotive.com)
It generates 30 pounds more aerodynamic downforce in front thanks to a more prominent lip below the front bumper and positive downforce (as opposed to lift) in back — largely a function of reworked underbody shields. (autoweek.com)